Warp stop-motion for looms.



H. WYMAN.

WARP STOP MOTION FOR Ldoms.

APPLICATION FILED NOV. 23, 1906.

Patmtd Got. 19, 1909.

PATENT UNITED srnrns HORACE WYMAN, or woncnsrnn, mnssacnnsn'rrs, ASSIGNOR 'ro CROMPTON &

nnownns Loom WORKS, A CORPORATION or nnssaqnusnrrs.

WARP STOP-MOTION FOR. LOOIVIS.

To all whom it may concern:

Be it known that I, IIORACE WYMAN, a citizen of the UnitedStates, residing at Worcester, in the county of Worcester and a State of Massachusetts, have invented certain new and'useful Improvements in Warp Stop-Motions for Looms, of which the following is aspecification. ,1, v M invention relates to warp stop motions for; ooms, and to that class of warp atop motions in which there are one 'or mores'ets I or series of drop devices or detectors, and a drop device or detector for two warp threads,

v which is normally supported on or by two warp threads. The breaking of either warp thread allows the drop device or detector t'o' move into operative position, to operate means for stop ing the loom; and my invention particu arly relates to the shape or construction of the drop devices or detectors, and the combination thereof with the guide rods, and other parts of the warp stop motion.

The object of my invention is to .pro-

vide animproved warp stop motion of the class referred to. i

' My improvements are particularly adapted for, and are preferably used in, warp stop motions where electricity is employed,

so which warp stop motions are termed electric warp stop motions, but my improvements maybe-employed in connection with mechanical Warp stop motions.

I have only shown in the drawing de-.

tached portions of a warp stop motion of the class termed electric warp stop motions in which electricity is used, with my. improvementscombined therewith, sufiicient to enable those skilled in the'art'to understand 40 the construction and operation thereof.

Referring to the drawing :Fignre 1 is a front view ofdetached portions of an electric warp stop motion, broken out through the center, looking in the direction of arrow a, Fig. 2. The warp threads are not 'shown in this figure. Fig. 2 is a section, on line 2, 2, Fig. 1, looking in the direction of arrow 6, same figure; the -'warp threads and lease rods are-shown in thisfignre. Fig. 3 is an end view of the parts shown at the right in Fig. 1, looking in the direction of arrow 6, same figure. Fig. 4- s'hows the lease rods, warp supporting rods, guide rods, and terminal in section, as shown in Fig. 2, and also shows a drop device or detector in a position pre- Specification 'of Letters Patent.

Application filed November 23, 1906. Serial No. 344,721.

Patented oer. 1a, 1909.

' paratory to being put into operative position,

shown in Fig. 2, or preparatory to being re- .moved from engagement with the warp threads, and, Fig. 5 is a section, on line 5, 5, Fig. l, looking in the direction of'arrow 0, same figure, showing the manner of supporting a drop device or detector on two of the warp threads, so that the breaking of either warp thread will allow the drop device or detector to drop down. 1

In the accompanying drawing, 1 are the end stands of the warp stop motion, adapted to be secured in a fixed position on the loom frame. The standsl have in this instance on their upper edge three recessed portions l for the warp"supporting rods or bars 2, in this instance three in number.

3 are the end-frames of the warpstop m0- t'ion, which may be vertically adjustable on the stands 1, and are attached theretp in this instance by a bolt & and thumb nut 5. The end-frames 3 have secured thereto the guiderods 6, in this instance two in number, and have a central recess therein for the bar 7 forming one terminal of an electric circuit; said bar or tern'iinal 7 is properly insulated from the end-frames 3, and is connected by a bar or spring blade 8 witha wire 9, leading to a battery, or other source of electric supply, not shown.

The two guide rods 6 form the other ter minal of the electric circuit, and are .connected by a guide wire 10 with the battery, not shown,

11 are the lease rods, which in this instance are used, and which divit e the warp threads 12, as they pass from the beam, not shown, into two groups or sets, which cross each other intermediate the lease rods 11, as shown, and both groups pass over and rest upon the warp supporting rods 2. There are in this instance two sets or series of drop devic s 13, shown extending in two parallel rows, and each set or series extends between two of the warp supporting rodsor bars 2, 1 which retain the drop devices in position, in the direction of the length of the warp threads. Each drop device 13 is preferably made of thin metal, and has a longitudinally extending open end slot 13 in its lower portion, and a longitudinally extending slot pr opening 13 in its upper portion, withan opening 13 leading out therefrom, preferably on one side of the device, at the lower end of the opening 13". The upper end of 219 the drop device or detector 15 is preferably made wider and with the inclined edges 13", as shown.

There is a drop device or detector 13 for -5 two warp threads, or a pair of warp threads,

and each drop device or detector 13 is preterably combined with two warp threads, or a pair of warp threads, by crossing said warp threads, and inserting betweenv said warp threads the lower end of the drop device, and combining the lower slotted end of said drop device with. the two warp threads in such a manner that one warp thread of a pair will be' upon 'one side ol? the drop de- 15 vice, and the other warp thread of thepair will be on the other side-of the drop device, shown in Fig. 5, so that in case either one of a pair of warp threads breaks the drop device will move downwardly, and he guided by the guide rod 6, extending through the slotted opening 1?) in the upper portion I of the drop device, so that the upperend ol the drop device will be brought in contactwith the terminal bar 7, and through i its contact with the guide rod 6, the other terminal, as shown at. the right in Fig. 2,

means of any usual and ordinary construction, not shown, for stopping the loom.

, from the slotted opening 13," in the upper portion of the drop device or detector-125,

the drop device is readily plied to the warp a guide rod 6, by applying the drop device to a pair of warp threads in the. manner and quickly apabove described, and then raising the drop device as shown iirFig. at, until the opening 13'. from the opening 13" in the upper 40 portion of the drop device, is in line with the guide rod or terminal 6, as shown in. Fig. i, and then moving the drop device to cause the guide-rod 6 to enter through the opening 13 ito'the slot or opening 13', v and then lowering the drop device until it rests on the'warp threads, as shown at the left in F 2.

In orderto remove a drop device, it is only necessary to raise the same until the opening 1.3 front the slot or opening 13", {S111 line with a guide rod orternnnal 6, and

then move the drop 'deviceto cause the ,uide rod or terminal 6 to. pass-out throng the opening 13,-as shown in Fig. 4:, leaving the dgop device or detector free to be re-" moved. i

The ac'lvant'ages of my improvements will be -readily appreciatedby those skilled in the art.

I provide a drop device or detector for By means of the openingl3 leading out threads and connected with i l l l l l i l 1 l l l l l warp stop motions of the class referred to, which may be readily applied to, or removed from the warp threads, and combined with the other parts of the warp stop motion without removing any of the parts of the warp stop motion, or interfering; with the arrangement of the warp threads.

I have shown my improvements continued with an electric warp stop motion, but they maybe used in connection with mechanical warp st p n'iotions, if preferred.

it willbc understotul that the details of t '()llill'll(ll()ll of my inu'n'ovements may be varied if desired.

llariug thus described my invention, what i claim as new and desire to secure by Letters Patent ist l. in a warp stop motion, the eonihiinition with a plurality of warp supporting rods or bars, over which all ofthe warp thr adspass,

and rest on said rods or bars, of drop devices extending; between said rods or bars. and maintained in position by said rods or bars, each drop device engaging wo warp threads, and having: an open end .ot in its lower part, and a separate slot or opening will close the circuit, and put into operation maintained in position by said. rods oiubars,

each drop device engaging two warp threads, and having an open part, and a separate slot or opening in lts upper part, and an opening leading out from one side thereof for the passage of a guide rod or bar, and said guide rod or bar.

3. In a warp stop motion, a drop device or detector, supported by a plurality of warp threads, and having an open end slot in its lower part, and a separate slot or opening in its upper part, and aside opeuing leading out therefrom for the passage of a guide rod or bar, and said rod or bar. th. A. drop device or detector for a warp stop motion, to be su of warp threads, on slot or opening in its lower part,

ported by a plurality having an open end and a separate slot'or opening in its upper part, and a. side opening leading out trom the slot. or

opening in its upper part, for the passage or a guide rod or bar.

HORACE WYMAN.

t/Vitiiesscs Jenn C. Dnwnr, M. l-lias.

end slot iii its lower 

